Centrifugal cream-separator.



PATENTED JAN. 21, 1908.

6 SHEETS-SHEET 1.

INVENTOH E1 5 marm n L-N BY iwu M 80% ATTORNEY.

APPLICATION YILED 001218, 1906.

WITNESSES 6th,); 13 RWL PATBNTED JAN..21, 1908.

0. ANDERSON. CENTRIFUGAL CREAM SBPARATOR.

APPLICATION FILED 00118, 1905.

. 6 SHEETS-4333'! 2.

WITNESSES 9 INVENTOR ESAHAN EQEJ 8r 61m 13. M Wm s 7 ATTORNEY.

APPLICATION FILED OCT.1S. 190:.

6 SHEETSSHBET 3 INVENTOB A as 5 B) 72M M2w ATTORNEY.

\W/TNESSE 6km rawa No. 877,158, PATENTBD JAN. 21. 19 08. 0. ANDERSON.

GBNTRIFUGAL CREAM SEPARATOR.

APPLICATION FILED 00T.l8.1906

6 SHEETS-SHEET 4 I N VENTDR WITNESSES 6/ Q5 :33 Amnzaamm ATTORNEY.

, BY 6w r2; mmdlwub\ PATENTED JAN. 21, 1908.

0. ANDERSON.

GBNTRIFUGAL CREAM SEPARATOR.

APPLICATION FILED 0GT.18. 1906.

6 SHEETS-SHEET 5.

INVENTOR W/ TNE SSE 8 BY fiW M; 6m

ATTOHN r PATENTBD JAN. 21 1908.

O. ANDERSON.

GENTRI FUGAL CREAM SEPARATOR.

APPLICATION FILED 0012181906 6 SHEETSSHEET 6.

/ N VE N 70H ATTORNEY 1 5 @m 1am I wmvsss 1 OSCAR ANDERSON; OF KEARNY, NEW JERSEY.

CENTREUGAL CREAM-SEPARATOR.

not 877,168.

Specification of Letters Patent Patented Jan. 21, 1908.

Application filed. October 18. 1906- Scrial No. 339.484.

To all whom it may concern:

Be it known that I, OSCAR Axnmzsov, a citizen of the United States, residing at Kearny, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Centrifugal Cream-Separators, of which the following is a. specification.

The objects of thisinvcntion are to rovide for a centrifugal cream separator a incr or liner skimming device in which there shall be a large number of upright surfaces arranged in a transverse plane at inclines to the radii, said surfaces being inclined all in the same general direction with reference to the radii; to thus present a maximum skimming area in a minimum space, and secure complete and perfect separation; to at the same time retain simplicity of construction and a small number of arts; to secure sufficient strength in such a evice so that it will not collapse under the strain of centrifugal force; to enable a plurality of such skimming devices to be nested and employed in a single separator; to providi "n improved skimming-shield for the top of we bowl; to provide for the convenient escape of the separated cream and skim milk; to'enable hot i the skimming device and skimming shield to be easily and erfectly cleaned; to secure. a simple, durale ano. in'ex )ensive construction throughout, and to obtain other advantages and results as may be brought out in the following description.

Referring to the accompanying drawings. in which like numerals of reference indicate corresponding parts in each of the several drawings, Figure 1 is a central vertical section of the bowl and interior devices of a contrifugal cream separator of my improved construction; Fig. 2 is a perspective view of the liner or skimming device employed in the body of the bowl, and Fig. 3 is a side elevation of the same; F ig. 4 is a top or plan 'view of two liners or skimming devices of my improved construction as employed together, and Fig. 5 is a transverse cross section on line 2, Fig. 3; 'Fig. 6 is a side elevation of the skimming shield for the top or cover of the bowl. Fig. 7 is a view of'thc same from beneath, Fig. 8 is a diagrammatic view showing an end view 0t parts of three skimming dovices spread out or developed, Fig. 9 is a ilmilar view of the 0p osite ends of such devices, and Fig. 10 a etail perspective view of said art so developed and somewhat separated longitudinally.

In said drawings, 1 indicates the bowl of a centrifugal cream separator supported on a spindle 2 screwed into a hub 3. and surmounted hy a cover 4 which screws on. as is common. A rubber riig 5, under centrifugal force lies outward in a suitable groove 6 over the joint formed by the body and cover of the bowl, to prcventlea he go at said joint. ll'ithin the said bowl is the usual centrally disposed supply tube 7. and which is provided at its bottom with a flaring portion 6, having a wide radial flange or plate 10.. This bottom or distributing plate extends to the side walls of the bowl, and is held up from the floor thereof by means of ribs 11, being perforated between said ribs, as at 12, to permit an upassage of fluid to the liners or skim min evices. The perforations 9, are within tie crcaiii-Wzlll and serve to relieve'the bottom 8 of the supply tubeof such cream as may have at that point become already separated under certain conditions. The liner or skimming device, as it is sometimes called, comprises a sheet metal body portion of cylindrical shape in general outline, the walls however being criinped or plaited into longitudinal corrugations which present alternate inward and outwardly directed anglcs, 13, 14, as clearly shown in Figs. 2, 4 and 5 of the drawings, more. particularly. Said bendings of said walls are at comparatively sharp angles, so that the greater part of the skimming device consists of transverse surfaces 15, 16, all inclined one with respect to another in a transverse plane of the liner and all lying transversely with respect to the general cylindrical surface. Furthermore, it should he noted that in a transverse done of the liner the. direction of each of al these skimming surfaces 15, 16, is oblique to the radii of the circle which it cuts, and all are inclined in the same direction with regard to the rotation of the machine.

In other words, if a radius be drawn at any point in such a plane, it will form an acute angle with any surface 15 or 16 which it cuts; and furthermore, each surface is inclined inward from the outer circumference of the cylindrical liner in the same direction, viz. forwardly with rcs acct to the direction of rotation of the bow Or, to state it in another way, both sides or skimming surfaces of each corrugation rake the same way, i. e., are tangent on the-same side of the center o rotationto circles struck from that center. This is a very important. feature of my invention, since it. enables many there surfaces to be provided than would be possible if they diverged widely in dill'ereut directions across the radii. From the construction, it follows that the acute angles formed in any transverse plane between radii and ti inner sides of the shim- Ining surfaces. will all be on the same side of said radii with reference to the direction of rotation. While said surfaces should extend longitudinally of the bowl or be uprightin that sense, they need not necessarily be vertical; again, though I have shown the liner cylindrical, it could obviously hr of other forms without departing from my invention. The walls of the said liner are at their outwardly presented angles 1-! longitudinally slotted, as at 17, while the inwardly presented angles 13. have similarly disposed rows of perforations 1S. Said slits 17 provide a ready outward passage of the; shim mill; or heavier portion of the. liquid in the operation of the machine, as will be hercinafter described, while the perforations to. enable the cream or lighter portion of the liquid to move; inwardly toward the cream wall. Furthermore, the outer ridges or angles 14, have bosses 12), to engage the inner walls of the bowl and hold the liner away therefrom. to provide opportunity for free horizontal and vertical llow of the skim-milk 0r heavier portion of the liquid. These bosses are preferably arranged, as shown. in three circumfereutial rows near the to), bottom and middle of the liner respeclhely, although an} other arrangement found necessary might be employed equally well.

The manner of constructing the ends of the liner is shown in Fig. l more particularly, where one of the corrugations is left open or unfinished. 'l'his end is lirst slitted as a t 20, along its inner angle or bending, and the inner corner cut oll' of one llap 22, thus formed, as at. )1, Fig. 5; then the lla iis folded into a. right angular plane and the other llap 23 is folded on top olit, its projecting corner being cut oil or folded over as prcferred. -'lhe edges of the two folded flaps then conform on the inside of the liner to the V-shaped corrugation, and are trimmed on the outside to conform to the circular outer boundary of he liner. 'lhe llaps being afterward sohlercd or t.-therwise secured firmly togethor,'pro vidc a strong connection or brace of the two sides of the V-shapcd corrugation, so that said sides cannot bedisplaccd with respect tticnch other by the ordinary amount of centrifugal force developed in a separator. Fltrtherlmire. the connection joins the corrugations or of the liner tocach other and forms acontinnousringat the end of tin-same. 'lhe grooves between the inner angular projections are entirely open at thci; endsfor wa hthe same construction previously described,

whil the inner one 24 ha v the inner angles bctwccn its adjacent inward projections or corrugations closed by folding over the ends as abov described in connection with the outer liner 2.3. This is only a matter of convenience. so as to enable the two liners to be nested, and it should be noted that tin-shiniining surfaces of both are similarly disposed. The inner liner 34, therefore has open grooves on its outside, and on its inside. grooves closed at their ends; hence, in order to facilitate cleaning these lat t r. it tray be desirabie to place in the end corners fillets 26, of any approvt-d formation to prevent the accumulation of dirt. The angles at or between the outward projections or corrugations thus formed upon the inner cylindrical liner '24 have at intervals bos es 27, to engage the edges of the entering pioieclious or corruga lions upon the outer liner 25, and thus hold the two lin rs at a proper distance apart.

ll still further liners were employed, as for instance a third one. the folded llaps would be left oll' of the econd liner '14 at one end. and the third or inner liner would be open at oncend ordcvoid of folded llaps, to acc nun date the ('lns'id end of the second liner, and pr vided with llaps or closcd at the uppusilt end to occupy the. space where the inner liner .was dcvoidof such a;:purtcnan cs. in this way as many liners or skimming devices as desired could be combined in a single ma chine. all separable and yet when put together presenting as a whole closed ends. as shown in Fig. 4. This is illustrated in Figs. 8, 9 and It), in which three'such skinmiing devices 24 are shown. ()wing to the dilliunity of showing such parts in their true cylimlrical curvatur they are shown as it spread out or de\'clo ped" and in Figs. 5 and J the three devices .24 are shown as if somewhat separated laterally, while in Fig. it) they art-shown as if separated somewhat longitudinally.

.\t the top of the cylindrical liner dc scribed is a cortical sheet metal skimming shield 30, which is keyed to the bowl cover or similarly secured to the supply tube, so as to preserve balance of the bowl, as at .35, and provides between itself and the inn. surface of the liovvl-cover a flow :pace 2H lotthe skim milk or heavier portion of the liquid being separated. 'lhis llow space is practically a continuation of the space ll], between the outer cylindrical liner 25, and the walls of the bowl, as'will be understood. At its ap x,

7 through the tube 7 and radiallv outward at From here the cream already separated by the said shield has. alcyliudrical neck 32, l adapted to till the central opening of the bowl cover, and which is for its lower part, adjacent to the conical portion of thoshield, provided with longitudinal grooves 33, for the up-passage of the skim-milk. Said grooves extend to or beyond the plane of an annular f grooreIH, in the inncrwallofthccentral opcningofthe howl cover, so that the skim milk has free access thereto and from the same to out let passages35 in t hesaid bowl cover. This neck 3; of the skimming shield is intcriorly recessed at its lower part, as at 36, to receiveand lit upon the upper end of the milk tube 7, the ntirc shield being preferably support l ed or held in place. this way. The said neck 32 furthermore has a longitudinal cream passage 37 arranged close to the supply duct 7, and which near its upper end is intersected by an inclined boring I3 and fitted with a'. cream screw I'll, which is adapt d to regulate the exact position of the outlet, as is common. The uut'd surface of the conical skimming shield, l preferably provide with grooves 40, whi h ext nd from its lower edge upwardly to the neck 3;, and are inclined or slanted rearwardly with respect to the direction of rotation of the bowl and its parts. B this nu-ans as the skim-milk is crowded inwardly from the larger circuniference of the bowl to the smaller neck 232, the energy lost in the retardation of its movement is expended upon the walls of the grooves to assist in rotating the bowl. Preferably, thcse grooves 40 are attained by corrugating the sheet metal shield, so that it is uneven on both the inside and the outside. Furthermore, the lower edge 4], f the conical shield meets the outer upper edge of the cylindrical liner or liners, and forms at its outside a rest for the rubberring 5, when slackened, and from whi h it rises by centrifugal force when the machine operates. to provide .1 skim-milk passage between itself and said shield.

lo the operation of In) improved separator, the milk as supplied passe: downward its bottom beneath the plate 10, escaping upward through the apertures 12 of said plate, 3 to a point just inside the cylindrical liners. f

centrifugal force mores inward, while the reslits l7, and over the skinm'iing surfaces. llere further separation occurs and the l cream moves inward through the 1: rl'orations l 18, while the milk goes onwardly outward l through the slits. This operation is carried on through the successive liners. until sepi aration is completed and the different pr l ducts dischar qyl from the bowl, as has been above indicated.

llaving thus described o 'nvcntion, what I laim a new I92 l t. In a centrifugal separator, alincr hav- 'ing cornigations the contiguous sides of which in a transverse plane of the liner extend across radii of the bowl in the same general direction.

2. in a centrifugal separator a liner having corrngations Th0 contiguoussidesot' which in a transverse plane of the liner extend across radii of the bowl and are inc ined outwardly backward with respect to the direction ol rotation.

it. In a centrifugal separator, a liner having corrugations the contiguous sides of which in a transverse plane of the liner extend across radii of the bowl and form at their inner surfaces acute angles with said radii on the same sides thereof with respect to the direction of rotation.

site edges of each skimming surface being connected one to the next preceding surface and the other to the nextsuccceding one.

' 5. In a centrifugal separator, a liner corrugated approximately parallel to the axis, the sides of said corrugations being nearly parallel and pointing in the same. general direction cutting the radii of said liner at similar angles.

6. In a centrifugal separator, a liner having corrugated walls, the sides of said corrugations in a transverse plane of the liner extending alternately in opposite directions with respect to the direction of rotation.

7. In a centrifugal separator, a liner having longitudinal corrugations both sides of which lie in planes tangent on the same side. the axis of rotation to circles struck therefrom.

8. In a centrifugal separator liner. the combination of a circumferential series of adjacent. skimming surfaces which in a transverse plane of the liner extend across radii of the liner in the same general direction, the opposite edges of each skimming surface being connected one to thcncxt preceding surface and the other to the next succeeding one, and means at. the ends of said skimming surfaces holding them in said position.

9. In a centrifugal separator, a liner having iongitudinal corrugations the sides of which in a transverse plane of the liner cut radii of the liner in the same general direction forming similar angles therewith, and means at. the ends of the liner holding said corrugations in said position.

it). in a centrifugal separator, the combination with a bowl and cover therefor, of a skimming shield arranged in said cover and forming between itself and the cover a passage for liquid, said shield halving upon its sni'hu'es riis \\'llit'i\ are in -fined from the miter part tit' said shield inwardly lmelumrd \\'itli respeel m the direetiun n2 i'utntinn.

11. in :1 entritligzil fitptllall ut. the enmliinntion with :1 how] .Hltl :i ('tti}i'i em'er therei'm', 05' enniml skimming: lai-d arranged in Said euver :ind l'ni'niinq hetnt-eza itself and the rover :1 passage it liquid. and .1 .=erie. ul' iilis up n tin-miter smile-e nl' mid liield extending: from its inst spirally tt-mird the apex and lml-luvzii-d with res'pett tn the direetiun til" rntntinn.

1'1. in :i eentrifngai septum-1r. the uniiii- 1 l i t I I l t llUllnW skinnnin shield a Y em'er lnn'in gl-mgitndinnl purtiunsufitsw'iills side. said i'ilw gin-d l'rnni the Illlili' part iii the Ewing int-lined d inwardly itttiuii.

13. In a eentrifugai separatonthe combinatinn ot' a bowl. :1 cover therefor open at its top, a supply tube centrally disposed in said bowl and terminating at the top of the cover, and a skimming shield having an annular lmdy portion lying in said euver forming a flow pns snge therewith and an annular neek ldlin; the top openingef the cover and projtt'iillj-I illeltl)e \'tmti, said neck having its interinr passage radially enlarged for its lower portion to receive and hold the supply tube and having its exterior v\uri'aee longitudinally grnnved i'runi the bottom up to rovide an exit fruni between the euver am the bed) portion of the shield and having intermediate of its ()tlttl end inner surl'nees :1 longitudinal boring to afford an outlet from within the hndy purtitm of the shield.

OSCAR ANDERSON.

In the presenee of- Fin-zmzizieic GERMANN, J12, F/JHl-ZI. l3. Itisnn. 

